Albert j



(No Model.)

' GREEN.

METAL PRESS WHEELS.

Patented Apr. 24, 1894.

DIE FOR SHA I No. 518,668.

of a male die to be used in UNETED STATES PATENT OFFICE.

ALBERT J. GREEN, OF DAYTON, OHIO, ASSIGNOR To THE STODDARD MANUFACTURING COMPANY, OF SAME PLAoE.

DIE FOR SHAPING METAL PRESS-WHEELS.

SPECIFICATION forming part of Letters Patent N 0. 518,668, dated April 24, 1894. Application filed August 16, 1893; Serial No. 483,284. (No model.)

To a Zl whom it may concern:

Be it known that I, ALBERT J. GREEN, a citizen of the United States, residing at Dayton,

in the county of Montgomeryand State of Ohio, have invented certain new and useful Improvements in Dies for Forming Press- Wheel Rims, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates particularly to dies for forming that class of wheels intended to be used with what are known as press drills, that is grain drills in which there is a press wheel following each hoe or runner to firm the ground over the planted seed and to produce a pronounced furrow in which the earth will be packed at both the sides and bottom for thebetter retention of the moisture, and to cause the speedier and more sure germination of the seed.

The object of myinvention is the economical production of the rims of such wheels, of-

a single piece or blank of metal, irrespective of the construction of the remainder of the wheel, for it is this rim, with its approximately V shape in cross section, which is the eltective medium in quired.

The novelty of my invention will be here inafter set forth and specifically pointed out in the claim.

In the accompanying drawings: Figure 1* is a perspective view of a wheel embodying my invention. Fig. 2 is a perspective view producing the rim of my improved wheel. Fig. 3 is a corre sponding view of a female die to 'be used in connection with the male die. Fig. 4 is a transverse section through both dies when brought together on the dotted line X X of Figs. 2 and 3. Fig. 5 is a corresponding view on the dotted line Y Y of Figs.'2 and 3. .Fig. 6 is a transverse section of the rim or tireof the wheel. I

The same letters of reference are used to indicate identical parts in all the figures.

As my invention relates only to the constrnction of the exterior rim or tire of the wheel, the other parts of which may be of producing the result re ter with rims having the same external shape 7 I understand to be old, butsuch wheels heretofore have had their rims or tires built up of two'or three pieces of metal requiring to be welded or united on lines extending circumferentially of the wheel, thus entailing considerable labor and expense and producing a wheel liable to separate on the lines of juncture.

The rim or tire of my improved wheel is constructed of a single blank or piece of metal given the proper shape in cross section and the proper circumferential curvature, with its abutting ends welded or otherwise secured together on a transverse line, or in the case of large wheels it may be constructed oftwo or more of such integral'sections united together on transverse lines; and in the car rying out of my invention I employ a male die D, Figs. 2, 4 and 5 whose contact side longitudinally is convexly curved to give the circumferential curvature to the tire or rim blank A, and whose contact side transversely tapers from a fiat, or substantially flat feeding-in end 0 to a gradually narrowing V shape to the discharge end (1. The female die E Figs. 3, 4 and 5 has on its contact sidea concave channel to which the contact side of the die D fits and which has a tapering channel e with beveled walls f, the angle of inclination. of said walls relative to a horizontal plane gradually increasing from the feedingin end of the die to the discharge end thereof, to give gradually increasing depth and decreasing width to the said channel, the projecting portion of themale die beingtormed to have increasing projection and-decreasing width from its feeding-in end to its discharge end, to correspond to the form of the channel of the female die. The die 'E is stationary and-the die D secured to any power device as a hammer or press to bring it down upon the die E with a blow of sufficient force to Having thus fully described my invention, bend the metal. The fiat blank from which I claimthe tire is to be formed is fed in between the The curved dies D and E having inclined dies at the fiat end a and is advanced slowly sides to form a V-shaped rim, the angles of 20 5 about two inches at a time after each blow so inclination of said sides gradually increasing that when it leaves the opposite end of the from the feeding-in ends of said dies to the dies it has its proper shape in cross section discharge ends thereof, to give gradually inand its proper circumferential curvature. I creasing projection and decreasing width to have found from actual experience with dies the male die D and increasing depth and de- 25 10 of this character that the metal blank can be creasing. width to the female die E, to operate thus shaped without any buckling or oversubstantially as set forth. lapping of the edges.

A press wheel having its rim constructed ALBERT GREEN as above forms the subject of a separate ap- Witnesses: r5 plication filed October 6, 1893, Serial No. C. G. STODDARD,

487,338. W. W. BARNETT. 

